1987 warrior 350

I put a run down '87 back together and it was hard to tune, to find out the Crank was bad(well its knocking pretty good near bottom). I got another motor now with a bent shift fork. Im gonna use the crank from the bad trans motor and put it in the other, unless shift forks are easier... I still...

Just as the title says, I have inconsistent spark. I have a 1987 warrior 350 and whenever I hold the start button, it'll spark once and then not spark again for another 10 or so revolutions. I've replaced the cdi, stator, ignition coil, spark plug, and also got a new key ignition switch from...